1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
// SPDX-License-Identifier: GPL-2.0-or-later
/***************************************************************************
* Copyright (C) 2006 by Dominic Rath *
* Dominic.Rath@gmx.de *
***************************************************************************/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "virtex2.h"
#include "xilinx_bit.h"
#include "pld.h"
static int virtex2_set_instr(struct jtag_tap *tap, uint32_t new_instr)
{
if (!tap)
return ERROR_FAIL;
if (buf_get_u32(tap->cur_instr, 0, tap->ir_length) != new_instr) {
struct scan_field field;
field.num_bits = tap->ir_length;
void *t = calloc(DIV_ROUND_UP(field.num_bits, 8), 1);
field.out_value = t;
buf_set_u32(t, 0, field.num_bits, new_instr);
field.in_value = NULL;
jtag_add_ir_scan(tap, &field, TAP_IDLE);
free(t);
}
return ERROR_OK;
}
static int virtex2_send_32(struct pld_device *pld_device,
int num_words, uint32_t *words)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
struct scan_field scan_field;
uint8_t *values;
int i;
values = malloc(num_words * 4);
scan_field.num_bits = num_words * 32;
scan_field.out_value = values;
scan_field.in_value = NULL;
for (i = 0; i < num_words; i++)
buf_set_u32(values + 4 * i, 0, 32, flip_u32(*words++, 32));
virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
free(values);
return ERROR_OK;
}
static inline void virtexflip32(jtag_callback_data_t arg)
{
uint8_t *in = (uint8_t *)arg;
*((uint32_t *)arg) = flip_u32(le_to_h_u32(in), 32);
}
static int virtex2_receive_32(struct pld_device *pld_device,
int num_words, uint32_t *words)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
struct scan_field scan_field;
scan_field.num_bits = 32;
scan_field.out_value = NULL;
scan_field.in_value = NULL;
virtex2_set_instr(virtex2_info->tap, 0x4); /* CFG_OUT */
while (num_words--) {
scan_field.in_value = (uint8_t *)words;
jtag_add_dr_scan(virtex2_info->tap, 1, &scan_field, TAP_DRPAUSE);
jtag_add_callback(virtexflip32, (jtag_callback_data_t)words);
words++;
}
return ERROR_OK;
}
static int virtex2_read_stat(struct pld_device *pld_device, uint32_t *status)
{
uint32_t data[5];
jtag_add_tlr();
data[0] = 0xaa995566; /* synch word */
data[1] = 0x2800E001; /* Type 1, read, address 7, 1 word */
data[2] = 0x20000000; /* NOOP (Type 1, read, address 0, 0 words */
data[3] = 0x20000000; /* NOOP */
data[4] = 0x20000000; /* NOOP */
virtex2_send_32(pld_device, 5, data);
virtex2_receive_32(pld_device, 1, status);
jtag_execute_queue();
LOG_DEBUG("status: 0x%8.8" PRIx32 "", *status);
return ERROR_OK;
}
static int virtex2_load(struct pld_device *pld_device, const char *filename)
{
struct virtex2_pld_device *virtex2_info = pld_device->driver_priv;
struct xilinx_bit_file bit_file;
int retval;
unsigned int i;
struct scan_field field;
field.in_value = NULL;
retval = xilinx_read_bit_file(&bit_file, filename);
if (retval != ERROR_OK)
return retval;
virtex2_set_instr(virtex2_info->tap, 0xb); /* JPROG_B */
jtag_execute_queue();
jtag_add_sleep(1000);
virtex2_set_instr(virtex2_info->tap, 0x5); /* CFG_IN */
jtag_execute_queue();
for (i = 0; i < bit_file.length; i++)
bit_file.data[i] = flip_u32(bit_file.data[i], 8);
field.num_bits = bit_file.length * 8;
field.out_value = bit_file.data;
jtag_add_dr_scan(virtex2_info->tap, 1, &field, TAP_DRPAUSE);
jtag_execute_queue();
jtag_add_tlr();
if (!(virtex2_info->no_jstart))
virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
jtag_add_runtest(13, TAP_IDLE);
virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
if (!(virtex2_info->no_jstart))
virtex2_set_instr(virtex2_info->tap, 0xc); /* JSTART */
jtag_add_runtest(13, TAP_IDLE);
virtex2_set_instr(virtex2_info->tap, 0x3f); /* BYPASS */
jtag_execute_queue();
xilinx_free_bit_file(&bit_file);
return ERROR_OK;
}
COMMAND_HANDLER(virtex2_handle_read_stat_command)
{
struct pld_device *device;
uint32_t status;
if (CMD_ARGC < 1)
return ERROR_COMMAND_SYNTAX_ERROR;
unsigned dev_id;
COMMAND_PARSE_NUMBER(uint, CMD_ARGV[0], dev_id);
device = get_pld_device_by_num(dev_id);
if (!device) {
command_print(CMD, "pld device '#%s' is out of bounds", CMD_ARGV[0]);
return ERROR_FAIL;
}
virtex2_read_stat(device, &status);
command_print(CMD, "virtex2 status register: 0x%8.8" PRIx32 "", status);
return ERROR_OK;
}
PLD_DEVICE_COMMAND_HANDLER(virtex2_pld_device_command)
{
struct jtag_tap *tap;
struct virtex2_pld_device *virtex2_info;
if (CMD_ARGC < 2)
return ERROR_COMMAND_SYNTAX_ERROR;
tap = jtag_tap_by_string(CMD_ARGV[1]);
if (!tap) {
command_print(CMD, "Tap: %s does not exist", CMD_ARGV[1]);
return ERROR_FAIL;
}
virtex2_info = malloc(sizeof(struct virtex2_pld_device));
virtex2_info->tap = tap;
virtex2_info->no_jstart = 0;
if (CMD_ARGC >= 3)
COMMAND_PARSE_NUMBER(int, CMD_ARGV[2], virtex2_info->no_jstart);
pld->driver_priv = virtex2_info;
return ERROR_OK;
}
static const struct command_registration virtex2_exec_command_handlers[] = {
{
.name = "read_stat",
.mode = COMMAND_EXEC,
.handler = virtex2_handle_read_stat_command,
.help = "read status register",
.usage = "pld_num",
},
COMMAND_REGISTRATION_DONE
};
static const struct command_registration virtex2_command_handler[] = {
{
.name = "virtex2",
.mode = COMMAND_ANY,
.help = "Virtex-II specific commands",
.usage = "",
.chain = virtex2_exec_command_handlers,
},
COMMAND_REGISTRATION_DONE
};
struct pld_driver virtex2_pld = {
.name = "virtex2",
.commands = virtex2_command_handler,
.pld_device_command = &virtex2_pld_device_command,
.load = &virtex2_load,
};
|
